So I've noticed a new sound on my 2003 g35 sedan when i start applying brakes.. No matter what speed.. Whenever I apply the brakes, the front left wheel/brake area starts to make a repetitive noise almost like sandal squeaking when its wet.. It's not constant.. almost as if it happens when the wheel hits a certain point.. it correlates with speed though, so if i am going faster and then brake, the squeak sound will still be there but at a higher frequency.. Strange thing is I heard this sound months before (Approximately 4) when i removed my wheels to paint my calipers.. I realized that one of the lug nuts was loose when i went to inspect the noise so i re-tightened it and the sound went away.. I have no idea if this had anything to do with it but it worked... so I recently retightened the lug nuts to see if that was the problem, but the sound remains and will not go away... I've cleaned around that area immensely thinking that there might be dirt in the calipers, etc.. but no help... Any help is MUCH appreciated... The sound is killing me and super embarrassing. Again, any help is appreciated.

 

First thing I would do is pull that wheel, pull the caliper, and check the brake pads & rotor braking surface. See if the brake pads are a similar thickness. Check if one pad's braking surface is more shiny than the other. Check if the outside braking surface of the rotor appears to be more shiny than the inside braking surface of the rotor. There are lots of things that could be going on.....but starting with checking the brake pads & rotor is a good first step.

Give it a shot and reply back with your findings.....while you have it apart, clean the caliper, pads, and rotor with a can of brake cleaner.

 

This is going to be the most ridiculous thing you've read today, but I had the same problem. There are two ways to fix this. First option is to replace the brake pedal (or find a way to put a covering on it), second option is to wear shoes with a different soul.

I had the same problem and it was pissing me off to no end until I found out it couldn't be heard outside of the car (thanks wifey). What I was hearing is the squeaking of my wet shoes on the break pedal. It was only happening in my running shoes after morning PT. No problem with my boots or Merrills but I never put 2 and 2 together until I had the wife help listen for me.

Hopefully you've got the same issue. If not, hopefully that was more entertaining for you than it had been for me.

 

HAHAHA!!! That was a very entertaining story! Thanks for the laughs x).. But no.. the sound comes from outside the car.. I just bought 4 new rotors and brake pads from r1 concepts and hopefully that will work... The rotors havn't been changed on this car ever and it currently has 86k miles. I took the wheel off that was making the noise and spun the rotor and a.) it didn't spin centripetally and b.) it was as if it has a heavy spot as if you moved the rotor even a centimeter away from its resting spot it would do a full circle.. get back to one particular spot and then stop there every time.

 

Hopefully it's just a warped rotor then, you got good life out of them so not a bad idea to change them out anyway. If the rotors don't do it check the calipers for seizing, but probably won't be necessary.

 

With 86k on the car, the entire brake system should be flushed when you install the new rotors/pads if you have done that in the last 10k miles. Moisture in the brake system can cause a caliper to not retract....thus keeping a single brake pads pressed against a rotor which over time can cause a rotor to warp.

 

Replaced the rotors and put on brand new brake pads.. the noise is dead and gone!